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Two 20 m diameter circles are placed so that the circumference of each just touches the center of the other. What is the area common to each circle?
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|dw:1395761734882:dw|
so, since the central angle is formed by 3 equilateral triangles ... the central angle is 120 degrees. half the area is the area of the segment with an angle of 120 degrees
or 4 times the area of this : |dw:1395761902255:dw|
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